One month after dating, the maze suddenly disappeared. Hyo-eun has been waiting for him, believing that he will return the maze that has disappeared without a word. Why did you leave by yourself? Hyo-eun is in a maze, wandering looking for the answer. The broken cell phone left behind by Labyrinth, there is something in it. Hyo-eun pledges not to return for a long time and leaves the house following the traces of the maze.